The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-00-020-3003, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Clarostat Sensors and Controls. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-020-3003 |
| Primary Part Number | RK105U |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Clarostat Sensors and Controls |
| Status | ACTIVE |
| Electrical Resistance Per Section | 1.0 MEGOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Section Quantity | 1 |
| Mounting Facility Quantity | 2 |
| Shaft Diameter | 0.125 INCHES NOMINAL IN |
| Body Style | RECTANGULAR W/MOUNTING HOLES/SLOTS |
| Mounting Method | UNTHREADED HOLE(S) |
| Body Width | 0.300 INCHES MAXIMUM IN |
| Body Height | 0.360 INCHES MAXIMUM IN |
| Maximum Starting Torque | 7.50 INCH-OUNCES IN |
| Mounting Hole Diameter | 0.086 INCHES MINIMUM IN |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -800.0 TO 50.0 SINGLE SECTION |
| Terminal Location | REAR END |
| Center to Center Distance Between Center Terminal and Outside Terminal | 0.328 INCHES NOMINAL IN |
| Features Provided | NONMETALLIC SHAFT |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Lateral Distance Between Mounting Hole Centers | 1.000 INCHES NOMINAL IN |
| Shaft Length | 0.030 INCHES MINIMUM IN |
| Body Length | 1.340 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.688 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 0.25 FREE AIR SINGLE SECTION |
| Reliability Indicator | NOT ESTABLISHED |
| Actuator Travel Control Feature | CLUTCH |
| Resistance Tolerance Per Section in Percent | -20.0 TO 20.0 SINGLE SECTION |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Rotary Actuator Travel in Angular Deg | 7920.0 NOMINAL |
| Ambient Temp in Deg Celsius Per Section at Full Rated Power | 50.0 SINGLE SECTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RK105U PRIMARY | Clarostat Sensors and Controls (USA) |
| Reference | Meaning |
|---|---|
| RK105U | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| 235S-1-105M | 5/9 Secondary reference U.S. Government activity |
NSN 5905-00-020-3003 is a Resistor,variable,nonwire Wound,, manufactured by Clarostat Sensors and Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-020-3003 has 1 manufacturer part number on file: RK105U (Clarostat Sensors and Controls).
Key specifications for RK105U: Overall Height: 0.548 INCHES MAXIMUM IN; Electrical Resistance Per Section: 1.0 MEGOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 SINGLE SECTION; Section Quantity: 1. 28 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.